I'm going to state for my own selfish purposes that the only way I'm going to be flying any time soon is if our government issues an outright ban on foreign charter operators doing business out of the UK on behalf of UK operators. Mark my words, the usual social dumpers are already sharpening their tools to pick up the slack because the horrid one way trade agreement allows them to.
If you haven't read the trade agreement. Do so and then hammer your local MP demanding an answer...
EU-UK Trade and Cooperation Agreement on Aviation with respect to “Leasing” (section 7, PDF page 232). In the text it is stated that :
“air carriers of the United Kingdom (can use) aircraft leased with crew from other air carriers of the Parties”
“in the case of air carriers of the Union, using aircraft leased with crew from other air carriers of the Union"
Backed up by a few UK owned airlines:
https://www.theguardian.com/business...ness-to-brexit
https://www.independent.co.uk/travel...-b1802841.html